probiotics, lactobacilli, bifidobacteria flat color line icon.

abdominal bacteria bacterial bacteriology bacterium bifidobacteria bifidobacterium biological biology business coli colon color colored dietary digestion digestive disease element enterobacteria fatigue fermentation flat flora gastrointestinal health icon immune inflammation intestinal intestine isolated lactic lactobacilli lactobacillus micro microorganism pictogram positive probiotic probiotics science simple stomach symbol thin vector web yogurt